4 facts filed under Performance and QoS: all 4 were read in the original source. Each was checked against the source’s own words, so its figures appear there, and each names where it comes from. The idea is taught in Part 9, Performance & Endurance.
Primary sources
In the SNIA PTS, Preconditioning is the process of writing data to the device to prepare it for Steady State measurement.
In the SNIA PTS, a Transition Zone is a performance state where the device’s performance is changing as it goes from one state to another, such as from FOB to Steady State.
In the SNIA PTS, Purge is the process of returning an SSS device to a state in which subsequent writes execute, as closely as possible, as if the device had never been used.
SNIA PTS describes a typical SSD taken fresh out of the box and exposed to a workload as showing a brief period of elevated performance followed by a transition to Steady State, and requires measurements to be taken in the Steady State region as the device’s normal working-life performance.
Sources
Primary is the original paper, standard or datasheet. Secondary is a review, a vendor summary or a news report. Measured is my own test data.
Show all 1 sources, 1 primary
- PrimarySolid State Storage (SSS) Performance Test Specification (PTS) EnterpriseSNIA, 2013